class AddNormsColumns < ActiveRecord::Migration
  def self.up
    add_column :norms, :sex, :string
    add_column :norms, :age_start, :integer
    add_column :norms, :age_end, :integer
    add_column :norms, :item, :string
  end

  def self.down
    remove_column :norms, :sex
    remove_column :norms, :age_start
    remove_column :norms, :age_end
    remove_column :norms, :item
  end
end
